title: Residues of cyantraniliprole and its metabolite J9Z38 in rice field ecosystem.
abstract: A simple and reliable analytical method was developed to detect cyantraniliprole (HGW86) and its metabolite J9Z38 in rice straw, paddy water, brown rice, and paddy soil. The fate of cyantraniliprole and its metabolite J9Z38 in rice field ecosystem was also studied. The target compounds were extracted using acetonitrile, cleaned up on silicagel or strong anion exchange column, and analyzed by ultra-performance liquid chromatography-tandem mass spectrometry. The average recoveries of cyantraniliprole and J9Z38 in rice straw, paddy water, brown rice, and paddy soil ranged from 79.0% to 108.6%, with relative standard deviations of 1.1-10.6%. The limits of quantification of cyantraniliprole and J9Z38 were 18 and 39μgkg(-1) for rice straw, 2.8 and 5.0μgkg(-1) for paddy water, 4.3 and 6.3μgkg(-1) for brown rice, and 3.9 and 5.3μgkg(-1) for paddy soil. The trial results showed that the half-lives of cyantraniliprole were 3.2, 4.4, and 6.3d in rice straw and 4.9, 2.0, and 6.2d in paddy water in Zhejiang, Hunan, and Shandong, respectively. The respective final residues of cyantraniliprole and J9Z38 in brown rice were lower than 0.05 and 0.02mgkg(-1) after 14d of pre-harvest interval. The maximum residue limit of cyantraniliprole at 0.1mgkg(-1) and dosage of 100g a.i.hm(-2), which could be considered safe to human beings and animals, were recommended.
authors.affiliation: State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
authors.forename: Changpeng
authors.initials: C
authors.lastname: Zhang
authors.forename: Xiuqing
authors.initials: X
authors.lastname: Hu
authors.forename: Hua
authors.initials: H
authors.lastname: Zhao
authors.forename: Min
authors.initials: M
authors.lastname: Wu
authors.forename: Hongmei
authors.initials: H
authors.lastname: He
authors.forename: Chunrong
authors.initials: C
authors.lastname: Zhang
authors.forename: Tao
authors.initials: T
authors.lastname: Tang
authors.forename: Lifeng
authors.initials: L
authors.lastname: Ping
authors.forename: Zhen
authors.initials: Z
authors.lastname: Li
mesh_terms: D017753:Ecosystem; D007700:Kinetics; D012275:Oryza / Q000737:chemistry*; D010571:Pest Control; D010573:Pesticide Residues / Q000032:analysis* / Q000378:metabolism*; D011634:Public Health; D011720:Pyrazoles / Q000032:analysis* / Q000378:metabolism*; D012987:Soil / Q000737:chemistry; D014867:Water / Q000737:chemistry; D062367:ortho-Aminobenzoates / Q000032:analysis* / Q000378:metabolism*
chemical_list: D010573:Pesticide Residues; D011720:Pyrazoles; D012987:Soil; D062367:ortho-Aminobenzoates; D014867:Water; C558219:cyantraniliprole
keywords: Cyantraniliprole; J9Z38; Residue; Rice